[DNA concentration in cells of the glandular epithelium of the endometrium during the menstrual bleeding phase].

DNA content in the endometrial gland cells (9 women of fertile age) was studied during menstruation by microspectrophotometry. It was shown that DNA content (mainly 2n) remained unchanged during different days of menstruation, both during the desquamation (the 1st--2nd days of the cycle), and during the regeneration stage (the 3rd--4th days). Along with this the mitotic activity in the glandular epithelium was absent completely (36 samples of endometrium).